Automatic cut-off for gas-heaters.



H. A. KOENIG.

AUTOMATIG GUT-OFF, FOR GAS HEATERS.

APPLICATION TILED NOV. 27, 1907- I 909,308. Pa t'elated Jan. 12, 1909.

THE NORRIS PSTERS 0a.. WASHINCION. o c.

@FFIQE.

HARRY A. KOENIG, OF PHILADELPEIA, PENNSYLVANIA.

AUTOMATIC CUT-OFF FOR GAS-HEATERS.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed November 27, 1907. Serial No. OJOB.

T 0 all whom it may concern:

Be it known that I, HARRY A. Konnie, a citizen of the United States, residing at Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Automatic Cut Offs for Gas Heaters, of which the following is a specification.

This invention relates generally to a device for heating irons and more particularly to a heating device in which the burner or heater is operative when the iron to be heated is placed above the same, and is cut-off or rendered in-operative when the iron is lifted from the heater.

Heretofore devices of this kind have been provided with valves which valves were opened and closed as the iron was placed or removed. In a busy shop, however, the iron is put on and taken off several thousand times a day and this constant action soon impairs both the valve and the mechanism for operating the same.

The object of my invention, therefore, is to completely avoid the use of valves and provide an apparatus which shall be exceedingly simple and efficient and one in which there are no parts whatever to get out of order or wear out.

Another object of the invention is to provide a device which can be used in connection with the ordinary gas and air supply and also in connection with any suitable form of compression or forcing device.

With these objects in view, my invention consists essentially in the employment of a vertically movable cup connected with the iron stand or rest and adapted to be lowered or depressed as the iron is placed upon the said stand or rest and raised or elevated when the said iron is removed, said cup containing a quantity of mercury or other suitable material which will prevent the assage of gas, said mercury or other materia being adapted to close the gas assage of the burner when the said cup is e evated, and thereby cut off the supply of gas to the burner and extinguish the flame.

The invention consists also in certain details of construction and novelties of combination, all of which will be described hereinafter and painted out in the claims.

In the drawing forming a part of this specificationz'Figure 1 is a vertical sectional view taken on the line 11 of Fig. 2 and illustrating a heating device embodying my s invention, and Fig. 2 is a sectional plan view on the line 22 of Fig. 1.

In carrying out my invention I employ a cast metal body portion A the lower part of which A is made hollow and bell-shaped as shown and rests upon a suitable base-plate B to which it is screwed, as shown at B. This base-plate B has a central raised portion B through which works a set-screw G the purpose of which will appear hereinafter. i -Within the hollow or bell-shaped portion A is the downwardly extending tubular portion 1 D which depends from the bottom of the 1 solid part of the body portion, and leading i into this tubular portion D is the gas supply passage E and leading therefrom is the gas delivery passage F which extends upwardly through the body portion and at the upper end of said passage is arranged the burner G which is preferably made elongated as shown in Fig. 2 in order to quickly and uniformly heat the iron.

The passages E and F are separated by means of a partition H which extends nearly to the bottom of the tubular extension I). The gas passage E also has a branch E which leads to the pilot G which is always burning and serves to light the burner the moment that gas is permitted to flow into the same. Within the hollow bottom is arranged a cup I, said cup having the vertical rods K connected thereto at diametrically opposite points, said rods extending through vertical passages or bores produced in the casting and carrying the iron stand or rest L at their upper ends, said rest or stand being secured by means of screws or bolts L. A suitable hood L is fastened to the stand L and is slotted at L to receive the handle of the iron. The cup I contains inercury or other suitable material and in operation it will be understood that when an iron is placed upon the stand L, the said stand will be depressed by the weight of the iron and force the rods K downwardly and inasmuch as said rods are connected to the cup I, the said cup will be forced downwardly and the level of the mercury will be carried down below the lower end of the partition H, and gas will then pass down through E around the end of the partition H and up through the passage F to the burner, and inasmuch as the pilot G is always burning the burner will be lighted and the iron heated. The moment,

this downward movement of the stand will -however, that the iron is lifted from th will act to lift the said stand, drawing up the rod and consequently the cup, which carries the mercury and the lower end of the parti: tion H is brought into the mercury and the passages E and F are both closed, thereby automatically cutting off the supply of gas and without the use of any valves.

An air passage E shown in dotted lines is made to enter the gas passage F at any suitable point, for the purpose of supplying air. The set-screw C before referred to, serves to limit the downward movement of the. cup and horizontal set-screws C passing through the sides of the body-portion serve. to limit the upward movement of the cup. An idle stand M is attached to an arm M which is preferably constructed with a collar M which is intended to it upon the upper end of the body and this collar is made detachable so that the arm can be shifted to either side of the device in order to accommodate either a right or left handed person. It will be: understood that the pressing iron may be rested upon the idle stand M when it isnot in use and when not being heated.

It will thus be seen that I provide an ex ceedingly sim 1e, and durable construction of gas contro ling device which completely avoids the use of valves and which will conseguently not easily wear out or get out of or er Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a device of the kind described, a casting having a depending portion provided with gas passages, a vertically movable cu arranged beneath the casting and ada to to contain a substance for sealing the ower ends of the gas passages, a burner, a stand, and means for connecting the stand and cup whereby said stand and cup move in unison, asset forth.

2. In a device of the kind described, the combination with a casting, the lower portion of which is hollow, said casting having a depending 'tubular portion extending into the hollow base, said depending portion having gas. passages extending therethrough, one of said passages communicating with the gas supply, and the other with a burner, said i passages being separated by a artition extending nearly to the bottom 0 the depending portion, a vertically movable cup arranged in the hollow base and containing mercury, an iron rest, and vertically movable rods connecting the rest and cup together, with springs for normally holding the cup elevated.

3. In a device of the kind described, the combination of a casting having a depending portion provided with gas passages as described, said casting also having a branch passage communicating with a gas passage, of a burner and a pilot, and a spring actuated iron rest and cup connected with said rest, said cup being adapted to contain mercury, for the purpose specified.

4. In a device of the kind described, the combination with a casting having a hollow base portion and provided with gas passages, a branch passage, and an air passage, a burner and a pilot, an iron rest, and vertically movable rods depending therefrom, a cup arranged in the hollow base and connected to the rods, springs for raising the rest, rods and cup, and means for limiting the movements of the cup, as set forth.

5. In a device of the kind described, the combination with a casting having a hollow base portion and a tubular projection extending thereinto, gas passages extending through the casting, said casting also having an air passage, an iron rest provided with a hood, of vertically movable rods connected to the rest and extending through said casting into the hollow base, the cup connected to the lower ends of the rods, springs surrounding the upper ends of the rods, a pilot and a burner, and means for limiting the movements of the cup for the purpose specified.

HARRY A. KOENIG.

Witnesses:

ALLEN J. BICKEL, CHAS. WENNER. 

